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19 December, 14:25

Solve 0=x-1 / (x-3) (x+2)

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  1. 19 December, 16:42
    0
    x = 2 + sqrt (6) or x = 2 - sqrt (6)

    Step-by-step explanation by completing the square:

    Solve for x:

    0 = x - (x + 2) / (x - 3)

    0 = x - (x + 2) / (x - 3) is equivalent to x - (x + 2) / (x - 3) = 0:

    x - (x + 2) / (x - 3) = 0

    Bring x - (x + 2) / (x - 3) together using the common denominator x - 3:

    (x^2 - 4 x - 2) / (x - 3) = 0

    Multiply both sides by x - 3:

    x^2 - 4 x - 2 = 0

    Add 2 to both sides:

    x^2 - 4 x = 2

    Add 4 to both sides:

    x^2 - 4 x + 4 = 6

    Write the left hand side as a square:

    (x - 2) ^2 = 6

    Take the square root of both sides:

    x - 2 = sqrt (6) or x - 2 = - sqrt (6)

    Add 2 to both sides:

    x = 2 + sqrt (6) or x - 2 = - sqrt (6)

    Add 2 to both sides:

    Answer: x = 2 + sqrt (6) or x = 2 - sqrt (6)
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